Drive on tire jack



c. E. PADEN 2,012,635

DRIVE ON TIRE JACK Aug. 27, 1935.

Filed June 7, 1954 2 Shets-Sheet 1 IIIIIIIIIIII Char/655F006 fi w d m WAug. 27, 1935. c. E. PADEN 2,012,635

DRIVE ON TIRE- JACK Filed June 7, 1934 2 Sheets-Sheet 2 (far/es 5&0?

Patented Aug. 27, 1935 DRIVE ON TIRE JACK Charles E. Paden, Pittsburgh,Pa., assignor of one-third to Edwin John Dettling, Mount Lebanon, Pa.,and one-third to James Clayton,

Dormont, Pa.

Application June 7, 1934, Serial No. 729,483

4 Claims.

may be disassembled and collapsed to permit the I same to be stored in arelatively small space'.

Other objects and advantages of the invention will be apparent duringthe course of the following description.

In the accompanying drawings forming a part of this specification, andin which like numerals are employed to designate like parts through thesame,

Figure 1 is a perspective view of the structure embodying thisinvention;

Figure 2 is a vertical sectional view;

Figure 3 is a partly vertical sectional view and partly side elevationalview;

Figure 4 is a side elevational view of the cradle with the drive-onramps collapsed;

Figure 5 is a detailed plan view of one of the ramp structures; and

Figure 6 is a detailed plan view of the jack mounting.

In the drawings, wherein for the purpose of illustration is shown thepreferred embodiment of this invention, the reference character Adesignates in its entirety the box-like wheel supporting cradle which isformed of side walls 6 and end walls 'I. It will be noted that the topedges of the side walls 6 are slightly curved to cause the same tocorrespond substantially with the curvature of a vehicle wheel. The endwalls I are illustrated as being of less height than the height' of theends of the side walls whereby the upper corners of the side walls formears 8 for the reception of pivot pins 9. These pivot pins function toconnect to the opposite ends of the boxlike cradle A the longitudinallycurved ramps Ill. These ramps are curved longitudinally to providegreater strength and are formed on their concave sides withlongitudinally extending reinforcing ribs II. The top surfaces of theramps l0 may be roughened in any desired manner or improved traction maybe provided by forming raised ribs on these top surfaces. Still afurther way of improving the traction surfaces of the ramps is byforming thereon raised letters which will spell the trade-mark or otheridentifying indicia of the manufacturer. For the purpose of assisting injoumalling the inner, pivoted ends of the ramps I 0, trough-like membersl2 may be associated with the upper edges of the end walls I. Eachtroughlike member l2 may be notched at l3 to receive the reinforcing ribll of the associated ramp.

Extending transversely of the cradle A and arranged within the same tobe connected at its ends to the side walls 6 are the parallel partitionplates l4. Interposed between these partition plates and extending inparallelism with respect to the same are bars IS. The partition platesI4 and the bars l5 function as supporting elements for a wheel when itis driven onto the cradle over either one of the ramps Hi. It will beseen from the drawings that the partition plates I4 extend substantiallythe full height of the side walls 6 at the intermediate portions of thelatter. The bars l5 are positioned at the upper edges of the side wall 6and are comparatively narrow. One side wall 6 is cut away at IE to forman opening in the bottom edge of the wall and in transverse alignmentwith the space between the partition plates M.

This opening is designed to receive the connecting bar ll which ispivotally attached at I8 to a base plate IS. The connecting bar ll isformed with a series of stops 20 which are spaced at suitable intervalsalong the length of the bar II. The base I9 is formed with a suitablenumber of apertures 2| designed to receive bolts which are employed forsecuring an axle engaging wheel lifting jack 22. By means of the stops20, the

connecting bar ll may be positioned within the opening or cut-awayportion IS in the side wall of the cradle so that any desired one of thestops 20 will engage the inner marginal edge of this opening. Thesestops, therefore, will permit the jack 22, mounted on the base l9, to bearranged at difierent distances from the cradle A. The adjustability ofthe jack relative to the cradle is desirable to enable the jack to bepositioned so that it will not interfere with the spring or any otherstructural feature associated with the axle.

The jack 22 may be of any desired design, such as a screw-jack. Allconventional vehicle jacks are provided with coupling sockets, or thelike 23 adapted to have connected thereto an operating crank. The sidewalls 6 of the cradle are provided with apertures 24 which are arrangedin alignment with the socket 23 of the jack. These apertures 24 areintended to receive an operating rod 25. Each end of the rod 25 isprovided with a coupling unit 26 which preferably in cludes a universaljoint. One of these couplings It is designed to fit thesooket II of theJack. Theremsiningcouplingllisdesignedforecnnection with the operatingcrankwhich is supplied with the conventional Jack mounted on the baseit. Itwillbeunderstoodthattherod "is or suiiicient length to extend fromthe socket II of the Jack through the apertures 24 and to pro- .iectbeyond thefar side of the cradle A a millcient distance to take care ofthe three different possible positions of adjustment of the Jackrelative to the cradle. If desired, the rod il may be of such a designas to be extensible to accommodate adjustments of the Jack relative tothe cradle.

'lhemannerofusingthisdriveontirejackwill be described as follows. Withall of the elements arranged in the manner illustrated in Fig. l, thevehicle wheel to be worked upon is driven onto the cradle A over eitherone of the ramps II. when the wheel rests on the partition plates l4 andthe supporting bars II, the axle of the wheel will be aligned with thejack 22. To raise the wheel an of the cradle A. the operator willactuate the jackvby means of the rod It and the'conventiona'l jackoperating crank. After the intended work has been performed on thewheel, such as the -chan8in8 oi the tire, the jack may be operated tolower the wheel onto the cradle and the wheel then may be moved oil ofthe cradle over. either one of the ramps il. After the device has servedits purpose and the operator desires to store the same under the seat ofthe vehicle, or in any other suitable place, the connecting bar I! iswithdrawn from the cradle A and pivoted about the point it to cause theconnecting bar to rest against the jack 22. The rampsit then may beiolded onto the cradle A. The entire device then will be .001- lapsedinto two comparatively small objects which may be readily stored.

It is to be understood that the form of this invention herewith shownand described is to be taken as a preferred example of the same, andthat various changesin the shape, size, and arrangement of parts may beresorted to without departing from thespirit of the invention or thescope of the subloined claims.

Having thus described the-invention, I claim:

1. In a device of'the character described. a

wheel supporting cradle, an inclined ramp piv-' otally connected to oneend of the cradle for movement between an operative position projectingfrom said cradle and an inoperative position overlying the cradle, alack supporting base connected to one side of said cradle, a jack'mounted on said base, and 'an operating rod extending through saidcradle for connection at one end with the jack and for connection at itsother end with a Jack operating crank.

2. In a device of the character described, a wheel supporting cradle, aninclined ramp pivotalLv connected to each end of the cradle, a Jacksupporting base, a connector bar attached to said base, means foradjustably connecting the bar to one side of the cradle to permit thebase to be located at diflerent distances from the cradle, a Jackmounted on said base, and an operating rod extending through said cradlefor connection at one end with the jack and for connecltlikon at itsother end with a Jack operating era v 3. In a device of the characterdescribed, a boxlike wheel supporting cradle having side and end wallsand a pair of transverse partition plates connected at their ends to theside walls, one side wall being cut away at its lower edge and betweensaid partition plates, an inclined ramp connected to one end of thecradle, a jack supporting base, a connector bar attached to said baseand extending into said cradle through the out-away :25: of its sidewall, and a jack mounted on said 4. In a device of the characterdescribed, a boxlike wheel supporting cradle having side and end wallsand a pair of transverse partition plates connectedat their ends to theside walls, one side wall being cut away at its lower edge and betweensaid partition plates, an inclined ramp connected to one end of thecradle, a Jack supporting base, a connector bar attached to said baseand extending into said cradle through the cut-away edge of its sidewall, a plurality ofstops carried by said bar at spaced points wherebythe bar may be arranged in different positions relative to said cradleand held against withdrawal by engagement of a stop with the margin ofsaid cut-away edge, and a jack mounted on said base.

CHARLES E. PADEN.

